More than a year after slapping then-City Councilman Allan Jennings with a $5,000 fine for sex harassment, city lawyers have turned to a private collection agency to get the money, The Post has learned.

Jennings, who’s no longer on the council, was fined, censured and removed from several council committees in April 2005.

The job of getting him to pay up has gone to the city’s collections agent, Leopold Gross & Summers.

“It could take years or days,” said Paul Gross, of collecting from those who owe the city. “It runs the gamut. Some people pay on receipt of a demand letter and others don’t.”

The council’s ethics panel concluded that Jennings had abused and demeaned his female employees, made lewd and unsavory comments, inappropriately touched women, and created a hostile work environment.